These entries are queried from radb.net using whois, you can try my project getting these.
:AS141340 route: 103.158.42.0/23 descr: route object mnt-by: MAINT-IN-IITM origin: AS141340 last-modified: 2020-12-04T06:20:12Z source: APNIC route: 103.158.42.0/24 descr: route object mnt-by: MAINT-IN-IITM origin: AS141340 last-modified: 2020-12-04T06:20:22Z source: APNIC route: 103.158.43.0/24 descr: route object mnt-by: MAINT-IN-IITM origin: AS141340 last-modified: 2020-12-04T06:20:34Z source: APNIC